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Inf/M26@ NAFETERS, PHOTO-LITHOGRAPER. WASHINGTON. D C.

diluted Staten ROBERT BERRYMAN, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 99,234, dated January 25, 1870.

LOW-WATER INDICATOR AND FEEDWATER REGULATOR The Schedule referred to :inthese Letters Patent and making part of the same.

To all whom it mcg/concern -Be it known that I, ROBERT BERRYMAN,otPhiladelphia, Pennsylvania, have invented an Improved Low-Water Alarmand Feed-Tater Regulator for Steam-Boilers, of which the following is aspecification.

Nature mul Object of ,the Intention.

My invention consists of an apparatus, fully dcscrbed hereafter, wherebythe admission of water to a. steam-boileris automatically regulated, andan alarm v is given when the water in the boiler falls to a determinedpoint.

Description of the Accompanying Drawings.

sion of water to the boiler.

General Description.

A is a vessel, which is, in the present inst-ance, ofa spherical form,and to the u nder side .of which is secured a pipe, P, extendinglongitudinally to a point where it is bent at right angles, and passesthrough Vthe shell of thc boiler, within which it termitates at a pointbelow the low-water line O.

At the upper end of the chamber is a pipe, l", to a branch on which issecured the pipe I, the latter extending horizontally to a point whereit is bent at right angles, from which point it is carried downwardthrough, and is secured to the shell of the' boiler, the pipeterminating within the boiler at the low-water line. The portions ot'the pipe P and pipe P2 on the outside of the boiler, should lle-ofsufficient length to permit them to yield, in the manner describedhereafter.

A lever, L, having its fulcrum on a projection, F, of a standard, D,resting on the shell ot' the boiler, is provided at one end with aweight, B, the opposite end heilig forked, so as to receive V-shapedprojections on the pipe P1, lthe lever and its weight thus supportingthe vessel A and its adj uncts, and serving as a connterbalance for thesame.

The lever It of the whistle NV, extends through a rod, G, which is sosecured to another rod, att-ached to the standald D, that it can beadjusted vertically, for a purpose described hereafter'.

The whistle has an internal spindle terminating below in a valve, whichis maintained in contact With its seat with a spring at the upper endot'the spindle, the latter being connected to the above-mentioned lever R.

As long as the wat-enfin the boiler remains at its proper level, (thatis, above the the low-water line O, the ends of the pipes P and P2 beingconsequently immersed in the water,) the pressure of steam will maintainthe pipes and the vessel A full of water, so that the -vessel will bedepressed, its weight being in excess of the force exerted by thecounter-balance lever L.

WVhile in this depressed condition, the whistle-lever R, which passesthrough the stationary rod G, will be elevated, and will consequentlypermit the valve of the whistle to remain in contact with its seat .Whenthe water in the boiler becomes too low, however, that is, below theline 0,-the steam will enter the pipe P2, and thev'essel A will bespeedily emptied of its water, and thus, becoming lighter, will,together with its whistle, be elevated by the counterbalancelever L, andthe lever'R, which will also be elevated, (being controlled by theVstationary rod G,) will cause the valve ot' the whistle to be opened,and an alarm to be given.

When the apparatus is to be used for regulating the admission ot' waterto the boiler, the vessel A (or the level' L) is connected to a valve inthe feed-water pipe, or with devices which control the action of theYpump or the flow of the feed-water, so that when the vessel rises, thewateluwill pass into the boiler, the descent of the vessel causing thewater to cease its dow.

One mode of effecting this result is shown in fig. 4, when the lever Lis connected, by a rod, J, with a lever operating a valve in thefeed-water pipe.

The. pipe P2 is larger in diameter than the pipe P, so that theincreased volume of steam, thus admitted to the vessel, will insure theinstant and rapid discharge of the water from the'same, and from thepipe P, and the prompt action of the apparatus..

`In the modification illustrated in fig. 3, the whistle, instead ofcommunicating wit-h the vessel A, is stationary upon and communicateswith the boiler, and is operated on the movement of the vessel or of itslever.

Although I have referred to flexible pipes P, PZ, it will be apparentthat rigid pipes may bc employed,

vsteam-tight joints .or couplings being placed in the pipes, at suchpoints as may be necessary to allow the pipes to accommodate themselvesto themovements of the vessel.

l do not here claim, broadly, the use of two pipes of dierent diameters,in connection with a vessel communicating with a steam-boiler; nor do Ihere claim 2. The said vessel, in combination with a steam' whistle, andwith the within-described devices for-operating the whistle.

3. The rod G, adjustable in respect to the lever R, for the purposedescribed.

In testimony whereof, I have hereunto signed m37 name, in the presenceof two subscribing witnesses.

ROBERT BERRYMAN.

Witnesses:

ISAAC R. O AKFORD, GEo..E. NICHOLS.

